Electric stop-motion device for looms.



w. LAWHUSHKO ELECTRIC S-TOP MOTION DEVICE FOR LOOMS.

APPLICATION FILED JUNE 18' I919.

1,321,762. I PatentedNov. 11,1919.

FIG. I.

Fi m n Y 111 1111111 ix 1 x1 m I 9 58 .1 3" 1;

$1100 6oz m L cuxx L06 1/110 W, LAWRUSHKO. ELECTRIC STOP MOTION DEVICE FOR LO0MS.

APPLICATION FILED JUNE I8. I9I9.

Patented Nov. 11, 1919.

, a citizen of Ukraine,

1 Fig. 15 is WASYL LAWRUSHKO, or BnIneEronr, CONNECTICUT, ASSIGNOR or our-HALF r0 WAWRZYNIEC SLEZAK, 0F BRIDGEPORT, CONNECTICUT.

ELECTRIC STOJP-MOTION DEVICE FOR'LOOMS.

Specification otLetters Patent.

I Application filed June 18, 1&18. Serial No. 305,004.

To all whom it may concern:

Be it, known that I, lVAsYL LAWRUSHKO, residing at Bridgeport, in the county of Fairfield and State of Con necticut, have invented certain new and use ful Improvements Devices for Looms, of which the following is a specification.

The primary object of the present invention is to provide an electric. stop motion device for looms wherein an electric circuit is adapted to be established for stopping the loom when the fabric passing therethrough is not traveling in the proper manner.

A further object of the invention is to provide an electric stop motion device for looms that cooperates with the fabric therethrough to guide the sameduring its movement and which is adapted to be oper ated upon a reverse movement thereof to complete an electric circuit and stop the operation of the loom.

the invention consists in the combination and arrangement of parts herein fully described in connection with the accompanying drawings and in which like characters of reference indicate similar parts throughout the several views.

In the drawings,

Figure 1 is a longitudinal sectional view of the guide roller constructed in accordance with the present invention and embodying mechanism for completing an electric circuit, v

Figs. 2 to 13 are cross sectional views taken on corresponding section lines on Fig. 1 showing the several elements forming the guideroller,

Fig. 14; is a detached side elevational view of the tubular screw,

a diagrammatic view showing the split fabric passing through the loom over the feed and guide rollers in its proper movement, and

Fig. 16 is a diagrammatic view, similar to Fig. 15 with the feeding roller improperly engaging the fabric thread through the loom and causing a reverse movement of the guide rollers as illustrated for purposes of stopping the loom.

In the art to which this invention pertains, with particular reference to the manufacture of velvet and like fabric, there is employed a feed roller having a plurality of in Electric Stop-Motion and carried beyond ing the feed rolleras illustrated in Fig. 16

purposes of .for th v sitating the severing of the other ply thereof so that additional time is necessary for passing initial passage of the.-

. .One of the With the above and other objects in view,

. plurality I surface of the fabric to insure a movement thereof in the reverse direction as indicated Fig.

rollers 7 by the pins or pickers upon the periphery thereof adapted for engaging the fabric while passing through the loom to insure-the proper movement thereof and to place the same under tension while leaving the 100m. Unless thepins are of perfect formation, fabric caught by-sald pins the usual point of leavand with continued rotation of the .feed roller, the fabric will be wound thereon, both from the receiving roller and from the lopm' which renders this material worthless e purpose intended as well as-necesagain starting the fabric on the receiving rollers as well as a serious financialloss. tion aims to overcome cia-ting an electric switch guide rollers in which the cylinguide rolleris provided with a of pins for engagement with the tier of the 16 so that an electric circuit will be' instantly completed upon a slight reverse movement of said guide roller to cause-the the passing through the loom will be and improperly retained 1 Patented Nov. 11, 1919,

The present inventhis defect by assomechanism with of the fabric the guide roller pr0- the loom, it being understood that the present Windingmechanism is associated with a. machine for manufacturing velvet or any similar material of two ply construction adapted for transverse severing, there being provided as illustrated, a pair of feed rollers I 1 provided on their peripheries with a plurality of pins fabric strips 3 that are separated by the knife 4 as illustrated in said figures. The fabric 3 'in passing to the receiving rollers 5, and upon leaving the feed roller 1 overguide rollers 6 and 7, the fabric 3, being held in engagement 1 with the guide auxiliary rollers 7 and during the proper movement of the fabric 2 for engagementwith the pass ' through the receiving mechanism, the guide ent invention particularly roller 7 moves in the direction indicated by the arrow in Fig; 15. The gist of the pres resides in the specific construction of the guide roller 7 which will now be described in detail.

The guide roller 7 is shown in detail in Figs. 1 to 14 and includes a hollow cylindrical casing 8 open at each end and provided upon the periphery thereof wit-h a plurality of pins 9 arranged thereon in any desired formation. One end of the casing 8 is closed by a plug 10 secured in said end by a set screw 11 illustrated in Fig. 2 while an opening is provided centrall thereof to receive the stub axle 12 carried y the .block 13 and upon which axle, the plug 10 and easing 8 are rotatably mounted, lateral movement of the plug. and easing upon the axle 12' being prevented bythe ring adjustably secured to said axle between the block 13 and plug 10.

As illustrated .in 'Fig. 3, the inner wall of the casing 8' is uninterrupted and is adapted to receive in the open end thereof, the cylinder 15 that is retained therein and held immovable relative to said casing by p a set screw 16 shown at the right hand side of the casing'8.

Diametrically opposite key-way slots 17 are formed upon the inner face of the cylinder 15 as shown in Figs. 1 and- 5 for purposes presently to appear.

. A block 18, is secured in the left hand end of the cylinder 15 by aset screw 19 illustrated in said figures and forms a bearing for one end of an expansion coil spring 20 contained within said cylinder. A cupshaped member 21 has the end wall 22 there- :of engaging the other end of said coil spring 20 and is slidably received in the cylinder 15, being capable of free longitudinal movement and prevented from relative rotary movement by the keys 23 formed upon diametrically opposite sides of the periphery thereof and extending longitudinally for sliding reception in key-way slots cup 21 with lugs 27 shown 17 of the cylinder.

With this construction, it will be seen that the cup 21 is capable of sliding movement in the cylinder and guided in such .movement by the keys 23 engaging the slots 17 which will prevent rotary movement of said cup and cause the same tobe revolved with the cylinder 15 and easing 8.

A tubular screw 24 shown in Figs. 1 and 14 includes a plain body portion as illustrated with an annular flange 25 intermediate the ends thereoinnd with a threaded head 26 at its forward end, the tubular screw 24 being adapted to have its head 26 inseged in the hollow portion of the 1n Figs. 1 and 7 projectingfrom opposite sides of the inner face of said cup for reception in the grooves of said screw head while the end of the provided with a pair of of the tubular screw 24 is received as shown in. Figs. 1 and 11, the screw being secured immovable relative to said support by the set screws 33.

An insulating bushing 34' of tubular for mation extends into the tubular screw 24 and terminates at a point adjacent the screw head thereof, the rear end of said insulating bushing projecting outwardly of said screw and having an offset portion 35 for the reception of a threaded. terminal plug 36. A short metal tube 37 is inserted in the outwardly projecting end of the bushing 34 and is; engaged by the terminal screw 36.- A contactneedle 38 slidably projects through said insulator bushing 34 and i:- collars 39 and 40, an expansion coil spring 41 surrounding said contact needle 38 between the metal tube 3 7 and collar 40 while a closure plug 42 is inserted in the inner end of the insu lator bushing 34 to be engaged by the collar 39 to limit the forward movement of the contact needle caused by the spring. A bracket 43 is carried by the attaching plate 30 and supports a terminal plug while circuit wires 45 are connected to the termi-- nal plugs, 36 and 44 forming the lines 0? the circuit- The journal bearings for the casin -8 and parts that rotate therewith include the stub axle 12 at the left hand end thereof and the tubular screw 24, it being noted that the gasket bearing 28 rotates with the cylinder and easing 8 while the tubular screw 24 remains stationary by being secured by the set screw 33 to the stationary bracket 31.

During the operation of the device, as-

the cup during such movement is cushioned by the spring 20 and maintained forwardly: positioned by said screw and the sprin 4:6 surrounding'the screw between the bloc 28 and open end of said cup, the circuit in this position of the parts being open.

the outer face of'. said cup slide in the cylinder roov-s 17 and Should the fabric strips 3 improperly engage the feed rollers l as illustrated in Fig. 16 as by being-retained by the pins upon the peripheries of the cylinders and, wound upon said cylinders as illustrated, guide rollers 7 will be reversely rotated 'as indi cated by the arrow in Fig. 16 and during this movement, the cup 21 rotating with.

cup 21 and grounded through the remaining mechanism to the plug-'44:, the circuit being completedto cause an instant stopping of the loom so that the improper-tracting of the material may be stopped and the needed repairs made. \Vith this construction, it will be seen that a simple and efiective means is provided for stopping "the loom instantly upon the improper movement of fabric passing over the guiderollers as with only a slight winding of the fabric upon the feed roller, the same may be repaired without serious damage and loss'ot time as would be the case if the material were allowed to wind for a considerable length upon said feed rollers.

l'Vhile I have herein shown what are be lieved to be the preferred embodiments of my invention, it is nevertheless to be understood that minor changes may be made in the form. combination and arrangement of parts without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. The combination with the rotatable guide roller of a loom, of means associated with the guide roller for stopping the loom upon a reverse rotation of the guide roller, said means including a plurality of normally inoperative cooperating elements, and means engaging one of said elements to cause the coESpe-ration of saidcooperating elements for stopping the loom when the roller is reversely rotated. -2.-An electric stop motion device for looms including arotatable guide roller, a

contact carried thereby and a stationary contact associated therewith. and means made operative upon a rmerse rotation of said roller to bring the contacts into engagement.

'3. An electric stop motion device for looms including a rotatable casing, fixed elements arranged in spaced relation therein, a movable contact. within said -casing between the fixed elements... cushion means at opposite sidesof the c ntact and engaging the fixed elements. a stationary is reversely rotated.

contact associated with [said casing, and

means for causing the movable contact to engage the stationary contact.

4. The combination with, a' loom guide roller, of a stationary electric contact point and a 'rotaltableand slidable contact point, and means fo'rcausing the latter point to be shifted upon areverse rotation of said roller to cause engagement of the contact points.

5. electric stop motion device forlooms including a rotatable casing, an axle bearing at one 'endthereof, a tubular screw upon which the other end is journaled andjelectric contacts'carried by the screw and casing and means adapted to be operated upon a reverse rotation of the casing to cause'an' engagement of the contacts.

6. An electric stop motion :device for looms comprlsmg a, guide roller. formed of a cylindrical cas1ng,.an axle bearing at one end thereof, a tubular screw extendmg'into the other end of said casing upongwhich said casing is rotatably mounted, a fixed support for said screw, al electric'terminal post carried by saidfsupport, another post carried by said screw, cotiperating' contact points carried -by said screw and casing and means' adapted to cause-the contact points to be brought into engagement whensaid casing i 7. An electric stop 'motion' device for looms comprising a guide roller formed of a cylindrical casing. an axle hearing at one end thereof, a tubular scrcw extending into the other end of said casing upon which-said casing is rotatably mounted, a fixed support for said screw, an electric terminal post carried by said s11pp irt,anotlier post carried by said screw, cooperating contacts carried. by the screw and casing, and cofiperating means carried the casing contact, the. screw and-the casing to cause the casing contact to be rotated with the casing and be adapted for sliding movement into engagement with the contact carriedby the screw when said casing is rc\erselyrotated! 8. An electric stop motion device for looms comprising a guide roller formed of a cylindrical casing, an axle bearing at one end thereof, a tubulanscrew'extendlng into the other end of said casing upon which said casing is rotatably mounted, a fixed'support for said screw, an electric terminal post carried by said support, another post carried by said s'crew,.a needle contact resiliently supported in said tubular screw, a cup rota table with and slidably receircd in casing constituting a contact-point and normally out of engagement with saidncedlc, and means carried by said cup in cngage- 1-25 mentwith said screw for causing the cup to move into engagement with said contact. needle when the 'asingis reversely rotated. 9. An electric stop motion device for looms comprising a guide roller formed of a at one cylindrical casing, an axle bearing ing into endther'eof, a tubular screw exten the other end of said casing upon which said casing is rotatably mounted, a fixed support for said 'screw, an electric terminal post carried by said support, another post L screw adapted when said cup is rotated withcarried bysaid screw, a needle contact re: slliently supported in said tubular screw, a-

cup rotatable witli and slidably-received in sald casing constituting a contact point and normally out, of engagement with said. needle, lugs formed upon the inner face of the cup extending into the grooves of said the casing tomove the. cup out of contact with the contact needle and to cause said cup to engage said contact needle when the casing is rversely rotated.

10. An electric stop motion device for looms comprising a guide roller formed of a cylindrical casmg; an axle bearing at one end thereof,, a tubular screw extending. into tween said cup and screw for causingsaid' cup to move In opposite directlons upon opthe other end of said casing upon which said casing is rotatably mounted, a' fixed'support for said-screw, an electric terminalpost carried by said support, another post carried by said screw, a tensionedcontact needle carried by said tubular screw, means for insulatin the same from said screw, a contact cup s ldably received in saldcasmg.

and rotatable therewith, connections beposite rotation of thecas'mg'and cushioning means for the cup arranged at opposite sides thereof. v I

11. An electric stop motion device for looms comprising a guide roller formed of a ciylindrical casing, an axlebearing at one thereof, a tubular screw extendin into the other end of said casing upon whic said casing is rotatably mounted, a fixed support for said-screw, an.electric terminal post carried by said support, another post carried ,by said screw, a tubular insulating bushing within said tubular screw, a con-- end thereof, a tubular screw extending into the other end of said casing upon which said casing is rotatably mounted, a fixed support for said screw, an electric terminal post carried by said support, another post car ried by said screw, cooperating contacts as sociated with said casmg and screw adapted when said casingis revers'ely rotated to be brought into engagement and a plurality of pins arranged upon the periphery of said casing.

13 .'-'A n electric, stop motion device for looms including 'a rotatable casing, fixed elements arranged in spaced'relation therein, a movable contact within said casing between the fixed elements, cushion means at opposite sides of the contact and engaging the fixed'elements, a stationary contact as'-' sociated with said casing, cushioning means for theistationary contact, andmeans for causing the movable contact to engage the stationary contact; I

' 14. An electric. stop motion device for looms including a rotatable casing, longitudinal key-way slots formed upon the m1 ner f'a'ce thereof, a contact slidable .in said casing and having lugs'extending intosaid slots, a stationary contact associated with said casing, and means for holding the movable contact at the limit of movement in one direction out of engagement with the stationary contact when the casing is rotated in a clockwise direction, said holding means operatingrupon a reverse rotation of the casing to slide the movable contact in the easing into. engagement with the stationary contact.-

15. An electric stop motion device for I looms including a rotatable casing, longitudinal key-way slots formed upon the inner face thereof, a contact slidable in said casing and having lugs extending into said 1 slots, cushioning means at each side of said contact, a stationary contact associated with said casing, and means for holding the movable contact at the limit of movement in one direction out of engagement with the .stationary contact when the casing is rotated in a clockwise direction, said holding means operating upon a reverse rotatlon of the casing to slide the movable contact in the casing i'ntoengagement with the stationary contact.

-1-6. An electric stop motion device for looms including a rotatable casing, longitudinal key-way slots formed upon the ilmer face thereof, a contact slidable in said casing and having lugs extending 'into said slots, a-stationary contact associated with said casing, means for holding themovable ,contact at the limit of movement in one di rection out of engagement with the stationary contact when the casing is rotated in a clockwise direction, and cushioning meansfor holding the stationary contact normally projected, said holding means operating upon a' reverse rotation of thecasin slide the movable contact in thcncasing mto en agement with the stationary contact.

in testimony whereof I aflix my signature. WASYL LAWRUSHKO. 

